No such thing as antigravity.

[Whereismymind]

To be free of gravity on earth you would have to be free from Earth's rotation and not be affected by Earth's magnetic fields considering every element has electrons and protons. There for they would be polarized. If you were free from Earth's gravity you would just witness earth rotating so fast you would be hit be a mountain, a tree, or a building. For ever stuck to just witness how fast earth really does rotate before a crash landing.

[HallsofIvy]

The force of gravity does NOT require earth's rotation or magnetic field.  Gravity is one of the basic forces and eletromagnetism is another. The earth's rotation prduces a  centrifugal effect that very very slightly offsets the effect of gravity.